Results 31 to 40 of about 2,817 (129)

Limit cycles bifurcating from the period annulus of a uniform isochronous center in a quartic polynomial differential system

Electronic Journal of Differential Equations, 2015
We study the number of limit cycles that bifurcate from the periodic solutions surrounding a uniform isochronous center located at the origin of the quartic polynomial differential system $$ \dot{x}=-y+xy(x^2+y^2),\quad \dot{y}=x+y^2(x^2+y^2 ...
Jackson Itikawa, Jaume Llibre
doaj  

Optical Intensity Interferometry with the Cherenkov Telescope Array

, 2012
With its unprecedented light-collecting area for night-sky observations, the Cherenkov Telescope Array (CTA) holds great potential for also optical stellar astronomy, in particular as a multi-element intensity interferometer for realizing imaging with ...
Actis, Akhperjanian, Aufdenberg, Bachor, Balasubramanian, Becker, Bessell, Boone, Carciofi, Carpenter, Cavazzani, Creech-Eakman, Dainis Dravins, Davies, Davis, de Wit, Deil, Deil, Domiciano de Souza, Dougherty, Dravins, Dravins, Dravins, Dravins, Dravins, Ebstein, Foellmi, Fontana, Glauber, Glindemann, Hanbury Brown, Hanbury Brown, Hanbury Brown, Hanbury Brown, Hanbury Brown, Hanbury Brown, Hannes Jensen, Hariharan, Harmanec, Hermann, Herrero, Hinton, Holdaway, Holmes, Holmes, Hyland, Hyland, Jain, Jensen, Kanaan, Kardashev, Kervella, Kervella, Keto, Klein, Kloppenborg, Labeyrie, Labeyrie, Labeyrie, Labeyrie, Lacki, Le Bouquin, LeBohec, LeBohec, LeBohec, LeBohec, Loudon, Lucarelli, MacGregor, Mandel, Marathay, Michelson, Millour, Millour, Mirzoyan, Mugnier, Naletto, Naletto, Naletto, North, Nuñez, Nuñez, Ofir, Ofir, Ofir, Oña-Wilhelmi, Paul D. Nuñez, Peterson, Pike, Porter, Quirrenbach, Rose, Saha, Saleh, Sato, Sato, Schliesser, Schulz, Shearer, Shih, Stephan LeBohec, Stéphan, Ségransan, Taylor, Thompson, Townsend, Twiss, ud-Doula, Vakili, van Boekel, Vassiliev, Weigelt, White, Wijaya, Zhao, Zhao   +115 more
core   +1 more source

Semiclassical quantization of the hydrogen atom in crossed electric and magnetic fields [PDF]

, 2002
The S-matrix theory formulation of closed-orbit theory recently proposed by Granger and Greene is extended to atoms in crossed electric and magnetic fields.
A. Matzkin, A.D. Peters, A.M. Ozorio de Almeida, B. Hüpper, B.E. Granger, D. Ullmo, E.B. Bogomolny, F. Robicheaux, G. Raithel, Günter Wunner, H. Schomerus, H. Schomerus, H. Schomerus, J. Gao, J. Main, J. Main, J. Main, J. Main, J. Main, J. Main, J. Rao, J.-M. Mao, J.N.L. Connor, J.N.L. Connor, Jörg Main, K. Weibert, M. Aymar, M. Courtney, M. Kuś, M. Sieber, M. Sieber, M. Sieber, M.L. Du, P.A. Dando, P.A. Dando, S. Tomsovic, T. Bartsch, T. Bartsch, T. Bartsch, T. Bartsch, T. Bartsch, Thomas Bartsch   +41 more
core   +2 more sources

Left Atrial Posterior Wall Functional Remodeling in Paroxysmal and Persistent Atrial Fibrillation. A Pilot Study

Journal of Cardiovascular Electrophysiology, EarlyView.
ABSTRACT Background The left atrial posterior wall (LAPW) is often targeted in atrial fibrillation (AF) ablation due to its shared properties with pulmonary veins. However, substrate‐guided approaches using structural markers have shown inconsistent results.
Michael M. Malaty, Natasha Trevaskis, Kerissa Govender, Aaron L. Sverdlov, Bradley R. Wilsmore, Malcolm Barlow, Nicholas Jackson, Gwilym M. Morris   +7 more
wiley   +1 more source

In silico modelling of multi‐electrode arrays for enhancing cardiac drug testing on hiPSC‐CM heterogeneous tissues

The Journal of Physiology, EarlyView.
Abstract figure legend Schematic overview of the experimental and computational framework for investigating hiPSC‐CM electrophysiology with MEA systems. The MEA‐based model integrates experimental data with phenotype‐specific ionic models and tissue‐level heterogeneity.
Sofia Botti, Rolf Krause, Luca F. Pavarino   +2 more
wiley   +1 more source

An integrated platform for 2‐D and 3‐D optical and electrical mapping of arrhythmias in Langendorff‐perfused rabbit hearts

The Journal of Physiology, EarlyView.
Abstract figure legend Integrated multimodal platform for panoramic cardiac mapping in isolated heart experiments. On the left, an image of the experimental setup during data acquisition showing a Langendorff‐perfused rabbit heart surrounded by three optical cameras (CAM A, B and C) positioned 120° apart, each coupled with high‐power LEDs for panoramic
Jimena Siles, Vinícius Silva, Tainan Neves, Italo Sandoval, Angélica Quadros, Giovanni Weber, Óscar Barquero, Ilija Uzelac, João Salinet   +8 more
wiley   +1 more source

Global phase portraits of quintic reversible uniform isochronous centers

Electronic Journal of Qualitative Theory of Differential Equations
This paper studies the global phase portraits of uniform isochronous quintic centers at the origin with time reversibility such that their nonlinear part is not homogeneous. By using Poincaré compactification, we obtain all possible phase portraits of this quintic polynomial differential system.
Guo, Lina, Chen, Aiyong
openaire   +2 more sources

Loess Studies in Aotearoa New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
Loess in Aotearoa New Zealand (ANZ) has been studied since its first documented recognition (on Banks Peninsula) in 1878 by Julius von Haast. A decade later, John Hardcastle revealed that southern ANZ loess was both glacial in origin and contained signals of past climates.
Brent V. Alloway, David J. Lowe, Bradley J. Pillans, Peter C. Almond, Alan S. Palmer   +4 more
wiley   +1 more source

Intensity limits of the PSI Injector II cyclotron

, 2017
We investigate limits on the current of the PSI Injector II high intensity separate-sector isochronous cyclotron, in its present configuration and after a proposed upgrade.
A. Adelmann, A. Kolano, Adam, Adam, Allen, Baumgarten, C. Baumgarten, Kolano, Landau, Qiang, R. Barlow, Stammbach, Toggweiler, Wangler   +13 more
core   +1 more source

Anomalous shell effect in the transition from a circular to a triangular billiard [PDF]

, 2008
We apply periodic orbit theory to a two-dimensional non-integrable billiard system whose boundary is varied smoothly from a circular to an equilateral triangular shape.
H. Nishioka, H. Nishioka, H. Weyl, Ken-ichiro Arita, L. D. Landau, M. Brack, M. Brack, M. C. Gutzwiller, Matthias Brack, S. Okai   +9 more
core   +4 more sources